I would have:
Man of Steel
Wonder Woman
the Batman
B v S
Man of Steel 2
Aquaman
Flash
Batman 2
Green Lantern Core
Justice League
I would have:
Man of Steel
Wonder Woman
the Batman
B v S
Man of Steel 2
Aquaman
Flash
Batman 2
Green Lantern Core
Justice League
Start out with low-medium budget single movies from directors with a vision. Successful movies get sequels if they want them. No crossovers until there are at least three successful franchises.
Man of Steel
The Batman
Wonder Woman
Green Lantern Corps
Justice League
Flash
Aguaman
Man of Steel 2
Wonder Woman 2
Justice League 2
From that point on, there’s an Aquaman movie, a Batman sequel where Red Hood shows up, Man of Steel 2, another Green Lantern movie introducing Jon Stewart, Green Arrow movie w/ Black Canary, and a Titans and JL movie in there somewhere.
Also, in the end credits of JL there’s illusions to Doomsday like in the death of Superman comics, just a lot of slow banging on a metal door - no visual, just sound.
Superman
The Batman
Wonder Woman
Aquaman
The Flash
Green Lantern
Justice League
Which ever order the multi-part story dictates…